The Waterrun Weather Forecast

    • 16
    • 23

    Mostly sunny

    • 17
    • 23

    Partly cloudy

    • 19
    • 21

    Possible shower

    • 18
    • 23

    Partly cloudy

    • 19
    • 25

    Partly cloudy

    • 21
    • 27

    Possible shower

    • 21
    • 28

    Shower or two

Today 30 Dec Sydney

Mostly sunny. Light winds becoming easterly 15 to 20 km/h in the early afternoon then becoming light in the evening.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the early afternoon then decreasing to about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southeasterly 1 to 1.5 metres.
Weather
Mostly sunny.
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  • Temperature Forecast Bureau of Meteorology

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The Waterrun Temperature Statistics View More

December Temperature

Sydney Airport (17km)

  • Lowest 2 December, 2025

    13.4 °C

  • Average December

    22.6 °C

  • Highest 19 December, 2025

    42.6 °C

Climate (2020–Present)

Sydney Airport (17km)

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  • Average Low 2020–2025

    14.8 °C

  • Average 2020–2025

    18.7 °C

  • Average High 2020–2025

    23.4 °C
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